Modular System for Automatic Hard Disk Processing and Verification

ABSTRACT

A method of using a conveyor system comprising capturing, with a first camera of the conveyor system, a first image of a server tray and a plurality of hard disks received along a first conveyor belt of the conveyor system, checking, with one or more processors of the conveyor system, a first serial number associated with the server tray and a second set of serial numbers associated with the plurality of hard disks against a reference list of serial numbers, capturing, with a second camera of the conveyor system, a second image of the server tray and the plurality of hard disks, and verifying an integrity status of the server tray and plurality of hard disks based on the second image.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of the filing date of U.S.Provisional Patent Application No. 63/066,529 filed Aug. 17, 2020, thedisclosure of which is hereby incorporated herein by reference.

BACKGROUND

Proper maintenance of a data center is pivotal in ensuring that the datacenter operates efficiently. Such maintenance includes consistentlyreplacing data center components, such as hard disks that malfunction,become too full, or the like. Once a hard disk has been identified asrequiring replacement, the server tray containing that hard disk isremoved from a server rack so that the hard disk can be removed from theserver tray. The serial number assigned to each hard disk and servertray is then checked to ensure that the correct server tray is selectedfor replacement. Current practices of replacing data center components,including checking the serial numbers assigned to those data centercomponents, are resource inefficient.

BRIEF SUMMARY

One aspect of the disclosure provides for a method of using a conveyorsystem comprising capturing, with a first camera of the conveyor system,a first image of a server tray and a plurality of hard disks receivedalong a first conveyor belt of the conveyor system, checking, with oneor more processors of the conveyor system, a first serial numberassociated with the server tray and a second set of serial numbersassociated with the plurality of hard disks against a reference list ofserial numbers, capturing, with a second camera of the conveyor system,a second image of the server tray and the plurality of hard disks, andverifying an integrity status of the server tray and plurality of harddisks based on the second image. Identifying the first serial number andthe second set of serial numbers may include identifying in the firstimage, with one or more processors of the conveyor system, a first barcode on the server tray and a plurality of bar codes on the plurality ofhard disks, and retrieve, with one or more processors of the conveyorsystem, the first serial number corresponding to the first bar code andthe second plurality of serial numbers corresponding to the plurality ofbar codes. Verifying the integrity status of the server tray and theplurality of hard disks may include receiving, along an egress stationof the conveyor system, the server tray and the plurality of hard disks,identifying, in the second image, an image portion corresponding to atleast one of the server tray and the plurality of hard disks, andcomparing the image portion to a reference image to determine whetherthere is a defect image portion on at least one of the first imageportion or the second image portion. The plurality of hard disks andserver tray may be received along a platform of the egress station, themethod further comprising lifting the platform such that the pluralityof hard disks and server tray prior to the second camera capturing thesecond image. The method may further comprise, when the image portionincludes the defect image portion, transferring the server tray and theplurality of hard disks to a first drop-off station of the conveyorsystem, classifying a defect type of the defect image portion, andnoting a location of the defect image portion along the image portion.The method may further comprise, when the image portion does not includethe defect image portion, transferring the server tray and the pluralityof hard disks to a disassembly station of the conveyor system. Themethod may further comprise removing the plurality of hard disks fromthe server tray, and transferring the plurality of hard disks to asecond drop-off station of the conveyor system. The method may furthercomprise removing at least one hard disk of the plurality of hard disksfrom the server tray without removing a set of hard disks of theplurality of hard disks from the server tray, and transferring the atleast one hard disk, without the set of hard disks, to the seconddrop-off station. The method may further comprise capturing, with athird camera coupled to the disassembly station, a third image of theserver tray and the plurality of hard disks, identifying in the thirdimage the first bar code on the server tray and the plurality bar codeson the plurality of hard disks, retrieving the first serial number fromthe first bar code and the second serial number from the second barcode, and checking the first serial number and the second serial numberagainst the reference list of serial numbers to ensure that the firstserial number and the second serial number are on the reference list.

Another aspect of the disclosure provides for a conveyor systemcomprising a first conveyor belt coupled to a first camera, a secondcamera coupled to the first camera, memory configured to store at leastone of instructions or data, and one or more processors operativelycoupled to the memory, the one or more processors being configured tocapture, with the first camera, a first image of a server tray and aplurality of hard disks that were received along a first conveyor becheck a first serial number associated with the server tray and a secondset of serial numbers associated with the plurality of hard disksagainst a reference list of serial numbers based on the first imagecapture a second image of the server tray and the plurality of harddisks, and verify an integrity status of the server tray and theplurality of hard disks based on the second image. The one or moreprocessors may further be configured to, in identifying the first serialnumber and the second set of serial numbers identify in the first imagea first bar code on the server tray and a plurality of codes on theplurality of hard disks, and retrieve the first serial numbercorresponding to the first bar code and the second plurality of serialnumbers corresponding to the plurality of bar codes. The conveyor systemmay further comprise an egress station coupled to the first conveyorbelt, and a second camera coupled to one of the first camera or theegress station, wherein the second camera is configured to capture asecond image of the server tray and the plurality of hard disks receivedalong the egress station, wherein the one or more processors are furtherconfigured to, in verifying the integrity status of the server tray andthe plurality of hard disks identify, in the second image, an imageportion corresponding to at least one of the server tray and theplurality of hard disks, and compare the image portion to a referenceimage to determine whether there is a defect image portion on the imageportion. The egress station may include a platform configured to receivethe server tray and plurality of hard disks, the egress stationincluding an actuator operatively coupled to the platform, the actuatorconfigured to lift the platform prior to the second camera capturing thesecond image. The conveyor system may further comprise a first drop-offstation coupled to the egress station, the egress station including aplatform configured to when the image portion includes the defect imageportion, transfer the server tray and the plurality of hard disks to thefirst drop-off, and the one or more processors are further configured toclassifying a defect type of the defect image portion, and note alocation of the defect image portion along the image portion. Theconveyor system may include a disassembly station coupled to the egressstation and the egress station including a platform configured to, whenthe image portion does not include the defect image portion, transferthe server tray and the plurality of hard disks to the disassemblystation. The conveyor system may further comprise a second drop-offstation coupled to the disassembly station and a second conveyor beltcoupled to the disassembly station, the disassembly station includes adisassembler configured to remove the plurality of hard disks from theserver tray, and transfer the plurality of hard disks to the seconddrop-off station. The disassembly station may include a disassemblerconfigured to remove at least one hard disk of the plurality of harddisks from the server tray without removing a set of hard disks of theplurality of hard disks from the server tray, and transfer the at leastone hard disk, without the set of hard disks, to the second drop-offstation. The conveyor system may further comprise a second conveyorbelt, wherein the disassembly station includes a pusher configured totransfer the server tray to the second conveyor belt. The conveyorsystem may further comprise a third camera coupled to the disassemblystation, the third camera configured to capture, with the third camera,a third image of the server tray and the plurality of hard disks,wherein the one or more processors are further configured to identify inthe third image the first bar code on the server tray and the pluralitybar codes on the plurality of hard disks, retrieve the first serialnumber from the first bar code and the second serial number from thesecond bar code, and check the first serial number and the second serialnumber against the reference list of serial numbers to ensure that thefirst serial number and the second serial number are on the referencelist.

Another aspect of the disclosure provides for a method comprisingreceiving a first image including a server tray and a plurality of harddisks, checking, by the one or more processors, a first serial numberassociated with the server tray and a second set of serial numbersassociated with the plurality of hard disks against a reference list ofserial numbers based on the first image, receiving a second imageincluding the server tray and the plurality of hard disks, verifying, bythe one or more processors, an integrity status of the server tray andthe plurality of hard disks based on the second image, and classifying adefect type of the defect image portion.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is an isometric view of a conveyor system in accordance withaspects of the disclosure.

FIGS. 1B-1C is a profile view of first and second camera in accordancewith aspects of the disclosure.

FIG. 2 is an isometric view of an egress station in accordance withaspects of the disclosure.

FIG. 3 is an isometric view of a disassembly station in accordance withaspects of the disclosure.

FIG. 4 is a functional diagram of an example system in accordance withaspects of the disclosure.

FIG. 5 is an example flowchart depicting the method in accordance withaspects of the disclosure.

FIG. 6 is an isolated view of a portion of the conveyor system of FIG. 1performing the method in accordance with aspects of the disclosure.

FIG. 7 is an isometric view of a first image captured by a camera inaccordance with aspects of the disclosure.

FIG. 8 is an isolated view of a portion of the conveyor system of FIG. 1performing the method in accordance with aspects of the disclosure.

FIG. 9 is an isometric view of an image captured by a camera inaccordance with aspects of the disclosure.

FIG. 10 is an isolated view of a portion of the conveyor system of FIG.1 performing the method in accordance with aspects of the disclosure.

FIG. 11 is an isolated view of a portion of the conveyor system of FIG.1 performing the method in accordance with aspects of the disclosure.

FIG. 12 is an isolated view of a portion of the conveyor system of FIG.1 performing the method in accordance with aspects of the disclosure.

FIG. 13 is an isolated view of a portion of the conveyor system of FIG.1 performing the method in accordance with aspects of the disclosure.

DETAILED DESCRIPTION

When replacing components of a data center an order may be manuallyissued by an operator, or automatically issued by a robot, to acomputing device within the data center to replace a component of thedata center with a fresh part. For instance, one or more hard diskshoused within a server tray may be identified as requiring replacement.This may occur where the hard disk is noted as malfunctioning, full, notoptimally performing, or the like. In such an instance, the order mayinclude a list of serial numbers associated with both the server trayand the hard disk received within the server tray.

The technology of this disclosure is directed to a conveyor system forautomatically checking whether the server tray and hard disks are thecorrect server tray and hard disks that need replacement according tothe initial order. Moreover, the conveyor system can automaticallyverify an integrity status of the server tray and hard disks bydetecting whether such data center components have any defects, such asphysical malformities of the data center component, prior to removingthe hard disks from the server tray.

FIG. 1A depicts an isometric view of conveyor system 1000 having a firstconveyor belt 100, egress station 200, first drop-off station 300,disassembly station 400, second drop-off station 500, second conveyorbelt 600, and computing device 710. Each station of conveyor system 1000includes a start point and an end point, and a path defined between thestart point and the end point. In this manner, an object (not shown),such as parts for a data center (e.g., server trays housing a pluralityof hard disks), or other data center components, can be transported by acertain station of conveyor system 1000 from the start point to the endpoint along the path defined between those two points. Moreover, eachend point of each station can be coupled to the start point of anadjacent station, or along a length of the adjacent station.

Conveyor belts 100, 600 can be any form of conveyance system known inthe art that is capable of supporting and transporting an object alongthe path defined between the starting and end points, such as a straightpath along the X-axis, as depicted in FIG. 1A. For example, as depictedfurther below, first and second conveyor belts 100, 600 can be made of aplurality of cylindrical rollers aligned along the same plane whilebeing offset from each other. Conveyor belts 100, 600 can additionallyinclude a belt overlaid on top of the rollers however, in otherexamples, the conveyor only includes a belt without any rollers. In yetother examples, conveyor belts 100, 600 can be a set of linkages, tiles,or plates engaged with each other and forming a surface to support anobject during transportation. The rollers, belt, or linkages of anyexample of conveyor belts 100, 600 can be freely movable or can be movedthrough a motorized actuation. For example, where conveyor belts 100,600 include rollers, such rollers can be freely rotatable such that anobject can slide on the rollers through an external force pushing theobject. Alternatively, the rollers can be motorized such that the objectcan be transported along the rollers without an external force bycontinuously rotating the rollers through a motorized operation known inthe art. The paths defined by conveyor belts 100, 600 can be any shape,including straight or curved.

FIGS. 1B-1C depicts a profile representation of cameras 800, 810 andobject 1001 being transported from first conveyor belt 100 to egressstation 200. Cameras 800, 810 can be any type of image capture deviceknown in the art. As depicted in FIG. 1B, first camera 800 can becoupled to an end point of conveyor belt 100 facing a first cameradirection 801 toward the conveyor belt to capture a first image ofobject 1001 as it is being transported toward the end point of theconveyor belt, similar to first image 1300 shown in FIG. 7. First camera800 can be facing down toward first conveyor belt 100 along first cameradirection 801 such that the first image can be from a downwardperspective or view in a Z-direction along the X-Z plane toward object1001 as the object is transported along the first conveyor belt. Thisfirst image can be sent to computing device 710 to be, for instance,scanned for bar codes located on the object that correspond to a partserial number, as further described below.

Second camera 810 can be coupled to first camera 800 facing a secondcamera direction 811, in an opposite direction along the X-axis thanfirst camera direction 801 of first camera 800. As depicted in FIG. 1C,second camera 810 can face a second camera direction 811 directed towardegress station 200 to capture a second image of object 1001 once theobject is transferred to platform 220, similar to image 1400 as shown inFIG. 9. Similar to camera 800, second camera direction 811 of secondcamera 810 can be facing in a downward direction in a Z-direction alongthe X-Z plane toward the object and egress station 200 as the object istransferred to the egress station. In this manner, camera 800 can take asecond image to be sent to computing device 710 to be, for instance,analyzed for physical defects, as discussed further below.

FIG. 2 depicts egress station 200 coupled to first conveyor belt 100,and can include a first first stop 230, a platform 220, and a secondactuator 210 operatively coupled to a pusher 240. Although platform 220is depicted as having a number of struts with rollers along its length,the platform can be any shape capable of receiving the object fromconveyor belt 100, such as being a flat surface or the like. In thismanner, an object (not shown) can be transported along conveyor belt 100in the X-direction until the object reaches an end point of the conveyorbelt, at which point the conveyor belt transfers the object onto theplatform 220 of egress station 200.

Egress station 200 includes a third camera 250 similar to cameras 800,810 except the third camera is facing along the X-direction. In thismanner, once an object is received on platform 220, the platform can beraised such that the object is facing substantially orthogonal to thirdcamera 810. Third camera 810 can then capture a profile view of theobject, such as a front and/or side view of a server tray and aplurality of hard disks. This profile view of the object allows for theimage taken by third camera 250 to include a normalized view of theobjects received along platform 220 so that a computing device, such ascomputing device 710, can more consistently analyze the objects receivedon the platform for certain physical defects, as discussed furtherbelow.

In other examples, first camera 800 can be attached to conveyor belt 100while second camera 810 can be attached to egress station 200. In yetanother example, there may be two cameras attached to egress station200. In a yet further example, there can be more than two cameras 800,810 such as three, four, or the like. Moreover, in other examples, thefirst and second directions can face any direction. For instance, thefirst direction of first camera 800 can be facing substantially parallelto a plane defined by conveyor belt 100 while the second direction ofsecond camera 810 can be facing down toward platform 220 of egressstation 200.

Platform 220 can be operatively coupled to a first actuator (not shown),such as a pneumatic motor, hydraulic motor, servo motor, or any othermotorized device that can move the platform, while a pusher 240 can beoperatively coupled to a second actuator 210 similar to the firstactuator. In this manner, the first actuator can raise or lower platform220 along a Z-direction while second actuator 210 can extend or retractpusher 240 along a Y-direction. For example, platform 220 can be raisedin a Z-direction to a certain height by the first actuator so that theobject can be transferred to a different part of conveyor system 1000,such as first drop-off station 300, as shown in FIG. 1, by pusher 210pushing the object along a horizontal direction towards the firstdrop-off station through the second actuator. The height of platform 220in the raised position can additionally be the same height for thirdcamera 250 to capture an image of the object as well as for egressstation 200 to transfer the object. This is beneficial because ananalysis of this image can be performed immediately after third camera250 captures the image to verify an integrity status of the object and,if a decision based on this image is made to transfer the object (suchas for pusher 240 to transfer the object to first drop-off station 300after computing device 710 detects a physical defect), platform 220 doesnot have to be further raised or lowered in order to do so.

First stop 230 is a substantially rectangular block extending along theZ-Y plane. Actuator 231 can cause first stop 230 to rise up along theZ-direction when an object is received along platform 220. In thismanner, first stop 230 can prevent an object from moving past platform220 along the X-direction. Actuator 231 is similar to the actuatorsdiscussed above.

Turning back to FIG. 1, first drop-off station 300 is coupled to egressstation 200 while second drop-off station 500 is coupled to disassemblystation 400. Drop-off stations 300, 500 can have a structure similar toconveyor belts 100, 600. In this manner, an object (not shown) can betransferred onto first drop-off station 300 in any orientation, and cansmoothly roll or slide onto the first drop-off station to a stop. Theobject can then be retrieved from the first drop-off station 300 by anoperator, such as a human or a robot. In other examples, drop-offstations 300, 500 can simply be a planar surface. In a yet furtherexample, drop-off stations 300, 500 can be a set of struts rotatablyhousing a number of spheres along their lengths. In this example, theobject can be received along the surface of the spheres. Furtherexamples of drop-off stations 300, 500 can have one or more stops (notshown) along a surface or portion of the drop-off stations to preventthe object received along the drop-off stations from travelling too farand falling off the drop-off stations.

FIGS. 1A and 3 depict disassembly station 400 coupled to egress station200. Disassembly station 400 includes a conveyor portion 410, a workportion 420, a disassembler 430, cameras 440, and pusher 450. Conveyorportion 410 can have a structure similar to conveyor belts 100, 600, asdescribed above. Conveyor portion 410 has a start point and an endpoint, and a path defined between the start point and the end pointalong the X-axis. Work portion 420 is coupled to the end point ofconveyor portion 410. In this manner, conveyor portion 410 can receivean object (not shown) from a start point and be transported to an endpoint to be transferred to work portion 420. Cameras 440 are similar tocameras 250, 800, 810, as shown in FIGS. 1 and 2, above. Specifically,cameras 440 can perform a similar function to first camera 800 bycapturing an image to be sent to computing device 710 so that the imagecan be scanned for bar codes associated with a serial part number,similar to first image 1300 as shown in FIG. 7. Pusher 450 is similar topusher 240 of egress station 200, except pusher 450 can push an objectlaterally along the length of disassembly station 400 in an X-direction.

Work portion 420 includes a work platform 421, a back stop 423, and asecond stop 424. Work platform 421 is a substantially planar surfacecoupled to the end point of conveyor portion 410. Work platform 421 canreceive an object transferred by conveyor portion 410. Back stop 423 isa substantially rectangular block secured opposite disassembler 430 onwork platform 421 along the width of the work platform along theY-direction. Back stop 423 can prevent movement of an object received onwork platform 421 along the Y-direction by providing a surface againstwhich the object can abut against when a force is applied to the objectalong the Y-direction. Similarly, second stop 424 is a substantiallyrectangular block. Second stop 424 can be actuated by an actuator toprevent an object received along platform 421 from moving too far alongthe X-direction.

Disassembler 430 includes fingers 431, grippers 432, and actuator 433.Actuator 433 is similar to actuator 210 and can be a servo motor or thelike. Actuator 433 can control translational, such as along aY-direction, and rotational movement of disassembler 430, such as abouta Z-axis, as well as movement of grippers 432. Fingers 431 extend fromalong the length of disassembler 430 toward work platform 421 along theY-direction. Fingers 431 can be received within slots or openings in anobject (not shown), such as slots defined by a server tray, to helpalign the server tray with disassembler 430. In this manner, an object,such as a server tray, can be held in place by fingers 431 along theX-direction and between disassembler 430 and back stop 423 along theY-direction. Grippers 432 also extend from the length of disassembler430 toward work platform 421 along the Y-direction. Grippers 432 arelonger in length than fingers 431 and have a hook or protrusionextending laterally from the grippers. The lateral protrusions ofgrippers 432 can assist in engaging an object, or a portion of anobject, such as a number of hard disks housed within a server tray thatis held in place by fingers 431 and back stop 423. Each hard disk can beengaged between two grippers 432 such that each lateral protrusion onthe grippers extends towards the hard disk. As such, actuator 433 canmove disassembler 430, such as in a direction away from work platform421, to unseat or disengage the hard disks from the server tray.

In other examples, there can be more or less than eight fingers andgrippers, such as seven, nine, or the like. Moreover, while FIG. 3depicts four sets of fingers 431 and grippers 432, each set having twofingers and grippers, there may be any number of sets of fingers andgrippers. For example, there may be more or less than four sets offingers 431 and grippers 432 along the length of disassembler 430. Inanother example, there may be a number of sets of fingers 431 andgrippers 432 vertically stacked on each other, such as two stacks offour sets of fingers 431 and grippers 432.

Cameras 440 can take yet another image once the hard disks are removedfrom the server tray. Computing device 710 can analyze this image todetermine whether all the hard disks have been removed. For instance,computing device 710 can compare this image with a reference image of anempty server tray.

FIG. 4 shows an example computing system 700 in which the featuresdescribed herein may be implemented. It should not be considered aslimiting the scope of the disclosure or usefulness of the featuresdescribed herein. In this example, system 700 may include servercomputing device 710 and computing devices 720, 730, 740 (collectively“computing devices”) as well as storage system 750. Server computingdevice 710 may contain one or more processors 712, memory 714, and othercomponents typically present in general purpose computing devices.

Memory 714 of server computing device 710 may store informationaccessible by the one or more processors 712, including instructions 716that can be executed by the one or more processors 712. The memory 714may also store data 718 that can be retrieved, manipulated or stored byone or more processors. The memory 714 may include any non-transitorytype capable of storing information accessible by the processor, such asa hard-drive, memory card, ROM, RAM, DVD, CD-ROM, a tape drive,write-capable, and read-only memories.

The instructions 716 may be any set of instructions to be executeddirectly, such as machine code, or indirectly, such as scripts, by theone or more processors. In that regard, the terms “instructions,”“kernels,” “applications,” “steps,” and “programs” can be usedinterchangeably herein. The instructions can be stored in object codeformat for direct processing by a processor, or in any other computingdevice language including scripts or collections of independent sourcecode modules that are interpreted on demand or compiled in advance. Forexample, instructions 716 may include scanning an image for bar codesand retrieving a serial number associated with that bar code. Moreover,instructions 716 may include scanning an image to verify whether anobject within the image includes any defects, such as a diskmisalignment, broken parts, or the like. Functions, methods, androutines of the instructions are explained in more detail below.

Data 718 may be retrieved, stored, and modified by the one or moreprocessors 712 in accordance with the instructions 716. For instance,although the subject matter described herein is not limited by anyparticular data structure, the data can be stored in computer registers,in a relational database as a table having many different fields andrecords, or XML documents. The data can also be formatted in anycomputing device-readable format such as, but not limited to, binaryvalues, ASCII, or Unicode. Moreover, the data can comprise anyinformation sufficient to identify the relevant information, such asnumbers, descriptive text, proprietary codes, pointers, references todata stored in other memories such as at other network locations, orinformation that is used by a function to calculate the relevant data.As an example, data 718 may include one or more images captured bycameras 250, 440, 800, 810. Additionally, data 718 may include a list ofserial numbers that correspond to certain bar codes that are associatedwith components of a data center.

The one or more processors 712 can be any conventional processors, suchas a commercially available CPU. Alternatively, the processors can bededicated components such as an application specific integrated circuit(“ASIC”) or other hardware-based processor. Although not necessary,server computing device 710 may include specialized hardware componentsto perform specific computing processes, such as decoding video orimages, matching video frames with images, distorting videos or images,encoding distorted videos or images, etc. faster or more efficiently.

Although FIG. 4 functionally illustrates processor 712, memory 714, andother elements of server computing device 710 as being within the sameblock, the processor, computer, computing device, or memory can actuallycomprise multiple processors, computers, computing devices, or memoriesthat may or may not be stored within the same physical housing. Forexample, memory 714 can be a hard drive or other storage media locatedin housings different from that of server computing device 710.Accordingly, references to a processor, computer, computing device, ormemory will be understood to include references to a collection ofprocessors, computers, computing devices, or memories that may or maynot operate in parallel. For example, server computing device 710 mayinclude server computing devices operating as a load-balanced serverfarm, distributed system, etc. Yet further, although some functionsdescribed below are indicated as taking place on a single computingdevice having a single processor, various aspects of the subject matterdescribed herein can be implemented by a plurality of computing devices,for example, communicating information over network 760.

Each of the computing devices 710, 720, 730, 740 can be at differentnodes of a network 760 and capable of directly and indirectlycommunicating with other nodes of network 760. Although only a fewcomputing devices 710, 720, 730, 740 are depicted in FIG. 4, it shouldbe appreciated that a typical system can include a large number ofconnected computing devices, with each different computing device beingat a different node of the network 760.

Network 760 and intervening nodes described herein can be interconnectedusing various protocols and systems, such that the network can be partof the Internet, World Wide Web, specific intranets, wide area networks,or local networks. The network can utilize standard communicationsprotocols, such as Ethernet, Wi-Fi and HTTP, protocols that areproprietary to one or more companies, and various combinations of theforegoing. For instance, two or more computing devices, such ascomputing devices 710, 720, 730, 740, may communicate through apeer-to-peer communication protocol, with or without the use of anintermediate server. Although certain advantages are obtained wheninformation is transmitted or received as noted above, other aspects ofthe subject matter described herein are not limited to any particularmanner of transmission of information.

As an example, server computing device 710 may include web serverscapable of communicating with storage system 750 as well as the othercomputing devices 710, 720, 730, 740 via network 760. For example,server computing device 710 may use network 760 to transmit and presentinformation, such as a location of a defect on a server tray, to a useron a display, such as display 721 of computing devices 710, 720, 730,740.

Each of the computing devices 710, 720, 730, 740 may be configuredsimilarly to server computing device 710, with one or more processors,memory, data, and instructions as described above. As such, computingdevices 710, 720, 730, 740 may perform all of the steps described hereinwithout communicating with server computing device 710. Each computingdevice 710, 720, 730, 740 may be a personal computing device intendedfor use by a user and have all of the components normally used inconnection with a personal computing device such as a central processingunit (CPU), memory (e.g., RAM and internal hard drives) storing data andinstructions, a display such as display 723 (e.g., a monitor having ascreen, a touch-screen, a projector, a television, or other device thatis operable to display information), and user input device 724 (e.g., amouse, keyboard, touch-screen, or microphone).

Although the computing devices 710, 720, 730, 740 may each comprise afull-sized computing device, they may alternatively comprise mobilecomputing devices capable of exchanging data with a server, such asserver computing device 710, over a network such as the Internet and/orcomputing devices capable of exchanging data with other computingdevices, such as over a network. By way of example only, computingdevice 720 may be a mobile phone, wearable device or a device such as awireless-enabled PDA, tablet PC, or a netbook that is capable ofobtaining information via the Internet. In another example, computingdevice 730 may be a tablet PC. In an additional example, computingdevice 740 may be a laptop computer.

As with memory 714, storage system 750 can be of any type ofcomputerized storage capable of storing information accessible by theserver computing devices 710, such as a hard-drive, memory card, ROM,RAM, DVD, CD-ROM, write-capable, and read-only memories. In addition,storage system 750 may include a distributed storage system where datais stored on a plurality of different storage devices which may bephysically located at the same or different geographic locations.Storage system 750 may be connected to the computing devices via thenetwork 760 as shown in FIG. 4 and/or may be directly connected to anyof the computing devices 710, 720, 730, 740.

In addition to the operations described herein, various operations willnow be described with reference to FIGS. 1-4 and 6-13, and with specificreference to flowchart 900 depicted in FIG. 5. It should be understoodthat the following operations do not have to be performed in the preciseorder described below. Rather, various steps can be handled in adifferent order or simultaneously, and steps may also be added oromitted.

Computing device 710 can receive an order to replace an object, such asone or more hard disks 1200 housed within a server tray 1100, asdepicted in FIGS. 6-13. Such an order can involve the component beingremoved from use in the data center and transported along conveyorsystem 1000. For example, this can include removing server tray 1100from use in the data center and having one or more hard disks 1200removed from the server tray. This order can include a list of serialnumbers corresponding to server tray 1100 and hard disks 1200.

With reference to block 910 and FIGS. 6-7, camera 800 can capture afirst image 1300 of an object, such as server tray 1100, beingtransported along first conveyor belt 100 in an X-direction from a startpoint to an end point of the first conveyor belt. As depicted in FIG. 7,first image 1300 includes bar codes 1310, 1320 with a server tray image1100 a representing server tray 1100 and hard disks image 1200 arepresenting hard disks 1200. Computing device 710 can identify servertray image 1100 a and hard disks image 1200 a by referencing first image1300 to an image generated from a machine learning or computer visionprocess.

Using the first image 1300, one or more processors 712 of computingdevice 710 can execute instructions 716 to scan and identify bar codes1310, 1320 within first image 1300 that are located on a server trayimage 1100 a and hard disks image 1200 a. For example, computing device710 can identify a first bar code 1310 located on server tray image 1100a and a second set of bar codes 1320 located on each hard disk image1200 a. From these bar codes 1310, 1320, computing device 710 canretrieve a first serial number from data 718 associated with the firstbar code 1310 and a second set of serial numbers associated with thesecond set of bar codes 1320 according to processes known in the art. Inthis manner, a first serial number can be associated with server tray1100 and a second set of serial numbers can be associated with theplurality of hard disks 1200 based on the first image.

With reference to block 920, computing device 710 can check the firstserial number and the second set of serial numbers against a referencelist of serial numbers based on first image 1300, as listed on theinitial order sent to computing device 710. In this manner, computingdevice 710 can confirm that the object, such as server tray 1100 housingthe plurality of hard disks 1200, is the correct data center componentsto be replaced. If server tray 1100 and hard disks 1200 are not thecorrect components of the data as listed on the initial order receivedby computing device 710, the server tray and hard disks can be flaggedas being the incorrect object and sent along the rest of conveyor system1000 to be retrieved by an operator or robot, such as to first drop-offstation 300 from egress station 200.

If computing device 710 confirms that the object is the correct objectaccording to the initial order, turning to FIG. 8 and with reference toblock 930, second camera 810 captures a second image of the object, suchas server tray 1100, to be sent to computing device 710 to analyze thesecond image for any defects. Computing device 710 first identifies animage portion in the second image corresponding to the object.

With reference to block 940, computing device 710 can then verify anintegrity status of the object based on the second image. The identifiedimage portion corresponding to the object is compared to a referenceimage depicting an ideal or optimal integrity status of the object. Theobject shown in the reference image can be shown without any defects orother visible physical malformations. This reference image can be formedusing a machine learning or computer vision algorithm. In this manner,computing device 710 can detect any differences between the objectidentified in the image portion of the second image and the object inthe reference image. Computing device 710 can classify any differencesbetween the images as a defect. In one example, where the object isserver tray 1100 housing a plurality of hard disks 1200, computingdevice 710 can identify a server image 1100 a corresponding to at leastone of the server tray or hard disks image 1200 a corresponding to theplurality of hard disks. In other examples, the image portion mayinclude both the server tray and hard disks. Additionally, using machinelearning the system can be automatically tuned to detect more anddifferent types of defects. For example, in some instances the systemmay detect defects that do not match up known defects. The system canthen add these defects to its data processing model so that futuredetection of these defects can be detected and dealt with.

The integrity status includes the physical state of the object andwhether there are any defects that might indicate there is an issue withthe object's physical state. For example, where the object is servertray 1100 and hard disks 1200, defects in the integrity status of theserver tray and hard disks can include any misalignment of the harddisks within the server tray, whether are any missing or loose parts,whether any parts are broken (e.g., any broken isolators), or any otherindication that the physical states of the server tray and hard disksare not optimal or ideal.

This verification step can be performed after the object is beingtransferred from first conveyor belt 100 to egress station 200 although,in other examples, this verification step can be performed as the objectis being transferred. Where second camera 810 is located along firstconveyor belt 100 and prior to the end point of the first conveyor belt,this verification step can be performed during or prior to the objectbeing transferred to egress station 200 such transfer. However, inanother example, where second camera 810 is located at the end point offirst conveyor belt 100, or coupled to an end of egress station 200adjacent the end point of the first conveyor belt, the verification stepcan be performed after the object is transferred to the egress station.

Where no defects are detected, the second image may be substantiallysimilar to first image 1300. However, where a defect(s) is detected,computing device 710 can categorize the type or class of defect. Forexample, turning to FIG. 9 where the object is server tray 1100 housinghard disks 1200, and image 1400 includes server tray image 1100 b andhard disk image 1200 b with defect image 1450, computing device 710 cancategorize the class of defect associated with the hard disks based onthe defect image representing that defect. Defect image 1450 canindicate that hard disks 1200 has some damage that needs repairingrather than simply being replaced. In other examples, computing device710 can categorize the type of defect as a misaligned hard disk, amissing part, or the like.

Computing device 710 can additionally highlight the location of defectimage 1450 through a notation 1460 on image 1400. In this manner, anoperator or robot can more quickly find the location of the defect onserver tray 1100 or hard disks 1200 based on notation 1460 on image1400. Moreover, computing device 710 can note the type of defect thatexists when sending server tray 1100 and hard disks 1200 to be fixed. Inthis manner, the operator or robot can know what type of defect to lookfor and work on defects that the defect can be more efficiently fixed.

Computing device 710 can detect, categorize, and note down the locationof a defect through processors 712 executing instructions 716 thatincludes a machine learning algorithm. For instance, a computer visionalgorithm can be trained to notice different types of common defects onan object based on a detected defect image portion on an imagecontaining the object. These defects can then be given a label by thealgorithm or the developer of the algorithm so that, when computingdevice 710 executes the algorithm, the computing device can recognizethe type of defect based on a provided image 1400 and defect image 1450.

In one example, computing device 710 may be continuously updatinginstructions 716 to improve the defect detection, categorization, andnotation based on the images received from cameras 250, 440, 800, 810 ina reiterative machine learning algorithm. For example, computing device710 can classify the defect type of a defect image as being a missingpart and, if an operator or robot receives the server tray and confirmsthe accuracy of this classification, the computing device can updateinstructions 716 to increase the chances that a similar type ofclassification will be made based on similar defect images. In otherexamples, computing device 710 does not continuously update instructions716 as the algorithm provided to the computing device is already trainedby a machine learning algorithm prior to being implemented with thecomputing device. Implementing such a machine learning algorithm todetect, categorize, or note such defects is beneficial as the defectimages can be difficult or impossible to detect with human eyes due tothe size and nuance of the defect image, or the performance of such canbe performed at much greater speeds than a human would be able to.

In one example, with reference to FIG. 2 and camera 250, the object maybe received on platform 220 prior to the verification step. First stop230 can be raised along a Z-direction by actuator 231 to prevent theobject from traveling past platform 200 along the X-direction. Platform220 can be raised along a Z-direction through a first actuator (notshown) such that the object is substantially orthogonal to a directionof the lens of camera 250, similar to server tray 1100 depicted in FIG.8, so that camera 250 can capture a second image having a profile viewof the object. The verification step can then be performed to determinewhether the object has a defect or is the correct object that wasinitially assigned to be removed, based on the second image, while theobject is at this elevated height. Where computing device 710 determinesthat the object includes a defect, or is not the correct objectinitially assigned to be removed, and requires the object be transferredto a different station to be worked on, such as first drop-off station300, this elevated height can be particularly beneficial as the heightof a top surface of the second drop-off station can be in line with thiselevated height. In this manner, the object may immediately betransferred to first drop-off station 300 by actuator 210 actuatingpusher 240 so that the object is pushed off from platform 220 along theY-direction directly onto the second drop-off station to be retrieved byan operator or robot to be worked on. If computing device 710 determinesthat the object does not have a defect, platform 220 can be lowered toits starting position to transfer the object to the next station. Inother examples, platform 220 is not raised to an elevated height and,instead, remains substantially level with the plane defined by a surfaceof egress station 200 during the verification process.

If computing device 710 does not detect that the object has a defect,the object can be transferred from egress station 200 to disassemblystation 400, as depicted in FIG. 3. Specifically, platform 220 cantravel along the length of egress station 200 along the X-direction totransfer the object to conveyor portion 410 of disassembly station 400.The object can then be transported along a path defined by conveyorportion 410 by pusher 450 engaging the object and pushing the objectalong the X-direction towards work portion 420.

Turning to FIG. 10, once the object reaches work portion 420, the serialnumber of the object can again be re-checked similar to the identifyingand checking steps of blocks 920. For example, where the object isserver tray 1100 including a plurality of hard disks 1200, the servertray can be received on work platform 421. Similar to camera 810,cameras 440 can take an image, similar to first image 1300, to be sentto computing device 710. Computing device 710 scans and identifies afirst bar code on the server tray image and a second set of bar codes onthe hard disks image to retrieve the first serial number associated withthe server tray 1100 and the second set of serial numbers associatedwith the plurality of hard disks 1200 based on the image. Computingdevice 710 can then check the first serial number and the second set ofserial numbers against the reference list of serial numbers, as listedon the initial order sent to computing device 710. Similar to above, ifserver tray 1100 and hard disks 1200 are identified as not being thecorrect items listed in the initial order, the server tray and harddisks can be flagged as such and sent along conveyor system 1000.

If server tray 1100 and hard disks 1200 are identified as being thecorrect items listed in the initial order, the hard disks can be removedfrom the server tray, as discussed below. In other examples, computingdevice 710 can additionally verify the integrity status of the objectthrough the image taken by cameras 440. In a yet further example, thissecond re-checking step with cameras 440 may not be performed, and theobject can be disassembled without checking again whether the object isin the initial order.

To disassemble the object, disassembler 430 can be pushed toward workplatform 421 by actuator 433 along the Y-direction to engage the object,such as server tray 1100 including hard disks 1200. Second stop 424 canbe raised by an actuator to prevent the object form moving too far alongthe X-direction and for the object to be appropriately aligned to beengaged by disassembler 430. Specifically, fingers 431 and grippers 432can be received within server tray 1100 through various openings (notshown) defined in the server tray. Fingers 431 can assist in maintainingthe position of server tray 1100 along work platform 421 the X-directionby laterally holding the server tray in place while also pushing theserver tray against back stop 423 to hold the server tray in place alongthe Y-direction. Actuator 433 can actuate grippers 432 to engage witheach individual hard disk 1200 in server tray 1100. In this manner,disassembler 430 can be translated away from server tray 1100 along theY-direction and disengage from server tray 1100 while grippers 432remains engaged with hard disks 1200 to remove the hard disks from theserver tray, as depicted in FIG. 11.

In other examples, grippers 432 may not engage all hard disks 1200 inserver tray 1100 and, instead, only a select number of the grippers willgrasp the corresponding hard disk in the server tray. For instance, withcontinued reference to FIGS. 3 and 10, and for server tray 1100 housingfour hard disks 1200 along the length of the server tray, the left-mosthard disk and right-most hard disk can be engaged by the set of twogrippers 432 along the left and right ends of disassembler 430 while theintermediate grippers does not engage the intermediate hard disks. Assuch, when disassembler 430 disengages from server tray 1100, only theleft-most and right-most hard disks 1200 will be removed.

Turning to FIGS. 11-12, once hard disks 1200 are removed from servertray 1100, disassembler 430 may rotate about the Z-axis to face seconddrop-off station 500 and transfer the hard disks onto the seconddrop-off station. Meanwhile, turning to FIG. 13, the empty (or partiallyempty) server tray 1300 is then transferred to second conveyor belt 600through pusher 450.

Replacing components of a data center is challenging, particularly inensuring that the components pulled from the data center are the correctcomponents noted as requiring replacement. Current methods of checkingwhether the pulled components are correct require a human operator tomanually scan the bar code of each hard disk. Such a method of checkingthe pulled components is costly in both time and labor while also beingprone to error.

Moreover, while the human operators scan the bar codes of the pulledcomponent, they do not currently check for whether such components aredamaged or possesses some other physical defect. Noting the type andlocation of such defects early on can save on costs in the long term asthese defects can be fixed before they become a larger issue. Moreover,this verification can decrease the chance the component of the datacenter is damaged during replacement. For example, a defect can involveone or more hard disks being misaligned in a server tray and attemptingto remove the misaligned hard disks may lead to a collision with theparts adjacent those hard disks; thus, potentially leading to greateroverall damage of the surrounding hard disks or server tray.

The current disclosure automates the processes discussed above so thatdata center maintenance and labor costs can be reduced while alsoallowing for the data center to function more efficiently. Moreover,this automation allows for greater integration with future data andmachine learning developments. Although the object to be replaced in thedata center has been substantially in reference to a server trayincluding a plurality of hard disks, it is understood that the objectmay be any component within a data center.

Although the subject matter herein has been described with reference toparticular examples, it is to be understood that these examples aremerely illustrative of the principles and applications of the subjectmatter described. It is therefore to be understood that numerousmodifications may be made and that other arrangements may be devisedwithout departing from the spirit and scope as defined by the appendedclaims.

1. A method of using a conveyor system comprising: capturing, with afirst camera of the conveyor system, a first image of a server tray anda plurality of hard disks received along a first conveyor belt of theconveyor system; checking, with one or more processors of the conveyorsystem, a first serial number associated with the server tray and asecond set of serial numbers associated with the plurality of hard disksagainst a reference list of serial numbers; capturing, with a secondcamera of the conveyor system, a second image of the server tray and theplurality of hard disks; and verifying an integrity status of the servertray and plurality of hard disks based on the second image.
 2. Themethod of claim 1, wherein identifying the first serial number and thesecond set of serial numbers include: identifying in the first image,with one or more processors of the conveyor system, a first bar code onthe server tray and a plurality of bar codes on the plurality of harddisks; and retrieve, with one or more processors of the conveyor system,the first serial number corresponding to the first bar code and thesecond plurality of serial numbers corresponding to the plurality of barcodes.
 3. The method of claim 1, wherein verifying the integrity statusof the server tray and the plurality of hard disks includes: receiving,along an egress station of the conveyor system, the server tray and theplurality of hard disks; identifying, in the second image, an imageportion corresponding to at least one of the server tray and theplurality of hard disks; and comparing the image portion to a referenceimage to determine whether there is a defect image portion on at leastone of the first image portion or the second image portion.
 4. Themethod of claim 3, wherein the plurality of hard disks and server trayare received along a platform of the egress station, the method furthercomprising lifting the platform such that the plurality of hard disksand server tray prior to the second camera capturing the second image.5. The method of claim 3, further comprising: when the image portionincludes the defect image portion, transferring the server tray and theplurality of hard disks to a first drop-off station of the conveyorsystem; classifying a defect type of the defect image portion; andnoting a location of the defect image portion along the image portion.6. The method of claim 3, further comprising, when the image portiondoes not include the defect image portion, transferring the server trayand the plurality of hard disks to a disassembly station of the conveyorsystem.
 7. The method of claim 6, further comprising: removing theplurality of hard disks from the server tray; and transferring theplurality of hard disks to a second drop-off station of the conveyorsystem.
 8. The method of claim 6, further comprising: removing at leastone hard disk of the plurality of hard disks from the server traywithout removing a set of hard disks of the plurality of hard disks fromthe server tray; and transferring the at least one hard disk, withoutthe set of hard disks, to the second drop-off station.
 9. The method ofclaim 6, further comprising capturing, with a third camera coupled tothe disassembly station, a third image of the server tray and theplurality of hard disks; identifying in the third image the first barcode on the server tray and the plurality bar codes on the plurality ofhard disks; retrieving the first serial number from the first bar codeand the second serial number from the second bar code; and checking thefirst serial number and the second serial number against the referencelist of serial numbers to ensure that the first serial number and thesecond serial number are on the reference list.
 10. A conveyor systemcomprising: a first conveyor belt coupled to a first camera, a secondcamera coupled to the first camera; memory configured to store at leastone of instructions or data; and one or more processors operativelycoupled to the memory, the one or more processors being configured to:capture, with the first camera, a first image of a server tray and aplurality of hard disks that were received along a first conveyor belt;check a first serial number associated with the server tray and a secondset of serial numbers associated with the plurality of hard disksagainst a reference list of serial numbers based on the first imagecapture a second image of the server tray and the plurality of harddisks; and verify an integrity status of the server tray and theplurality of hard disks based on the second image.
 11. The conveyorsystem of claim 10, wherein the one or more processors are furtherconfigured to, in identifying the first serial number and the second setof serial numbers: identify in the first image a first bar code on theserver tray and a plurality of codes on the plurality of hard disks; andretrieve the first serial number corresponding to the first bar code andthe second plurality of serial numbers corresponding to the plurality ofbar codes.
 12. The conveyor system of claim 10, further comprising anegress station coupled to the first conveyor belt, and a second cameracoupled to one of the first camera or the egress station, wherein thesecond camera is configured to capture a second image of the server trayand the plurality of hard disks received along the egress station,wherein the one or more processors are further configured to, inverifying the integrity status of the server tray and the plurality ofhard disks: identify, in the second image, an image portioncorresponding to at least one of the server tray and the plurality ofhard disks; and compare the image portion to a reference image todetermine whether there is a defect image portion on the image portion.13. The conveyor system of claim 12, wherein the egress station includesa platform configured to receive the server tray and plurality of harddisks, the egress station including an actuator operatively coupled tothe platform, the actuator configured to lift the platform prior to thesecond camera capturing the second image.
 14. The conveyor system ofclaim 12, further comprising a first drop-off station coupled to theegress station, the egress station including a platform configured to:when the image portion includes the defect image portion, transfer theserver tray and the plurality of hard disks to the first drop-off; andthe one or more processors are further configured to: classifying adefect type of the defect image portion; and note a location of thedefect image portion along the image portion.
 15. The conveyor system ofclaim 12, wherein the conveyor system includes a disassembly stationcoupled to the egress station and the egress station including aplatform configured to, when the image portion does not include thedefect image portion, transfer the server tray and the plurality of harddisks to the disassembly station.
 16. The conveyor system of claim 15,wherein the conveyor system further comprises a second drop-off stationcoupled to the disassembly station and a second conveyor belt coupled tothe disassembly station, the disassembly station includes a disassemblerconfigured to: remove the plurality of hard disks from the server tray;and transfer the plurality of hard disks to the second drop-off station.17. The conveyor system of claim 15, wherein the disassembly stationincludes a disassembler configured to: remove at least one hard disk ofthe plurality of hard disks from the server tray without removing a setof hard disks of the plurality of hard disks from the server tray; andtransfer the at least one hard disk, without the set of hard disks, tothe second drop-off station.
 18. The conveyor system of claim 15,further comprising a second conveyor belt, wherein the disassemblystation includes a pusher configured to transfer the server tray to thesecond conveyor belt.
 19. The conveyor system of claim 15, furthercomprising a third camera coupled to the disassembly station, the thirdcamera configured to capture, with the third camera, a third image ofthe server tray and the plurality of hard disks, wherein the one or moreprocessors are further configured to: identify in the third image thefirst bar code on the server tray and the plurality bar codes on theplurality of hard disks; retrieve the first serial number from the firstbar code and the second serial number from the second bar code; andcheck the first serial number and the second serial number against thereference list of serial numbers to ensure that the first serial numberand the second serial number are on the reference list.
 20. A methodcomprising: receiving a first image including a server tray and aplurality of hard disks; checking, by the one or more processors, afirst serial number associated with the server tray and a second set ofserial numbers associated with the plurality of hard disks against areference list of serial numbers based on the first image; receiving asecond image including the server tray and the plurality of hard disks;verifying, by the one or more processors, an integrity status of theserver tray and the plurality of hard disks based on the second image;and classifying a defect type of the defect image portion.